Hey! This is a really solid submission, you needn't be so hard on yourself for knowing you could have done more in different circumstances, we all know how Jams go. I'm not just saying this as a kindness you really should be proud of your work here. You know where you wanted to take it and you took a great first step and the results are already quite fun to play and the potential is very clear. Just life advice in general is never show off your creations starting out with a self disparaging word. Show it proudly and trust that folks will understand you had bigger aspirations.
But also actually I really do find this game fun and wouldn't have thought it to be any sort of "garbage". The thoughtful and creative mechanics carries it far on its own without "polish".